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431 431S29 431S29T
Technical Data
431 is a 17% chromium 2 1/2% nickel martensitic stainless steel. It is usually supplied in the high tensile condition.
Typical Analysis
C.
Mn.
P.
S.
Si.
Cr.
Ni.
0.12-
1.00%
0.04%
0.03%
1.00%
15.00-
2.00-
0.20%
max.
max.
min.
max.
18.00%
3.00%
Physical Properties
Temperature
20ºC
100ºC
200ºC
400ºC
Modulus of elasticity
22500
22000
21000
19500
kg/mm
Specific heat
0.11
0.12
0.13
0.14
kcal/ºC
Specific electrical resistance
0.6
0.7
0.8
0.95
(resistivity)
Mean value for:
20-100ºC
20-200ºC
20-400ºC
20-800ºC
Coefficient of Thermal Expansion
10
11
11.5
12
x10-6 per ºC
Density g/cm3 at 20ºC
7.7
Scaling temperature ºC
850ºC